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How to repeat different vectors to form another vector?

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Hi I would like to construct a vector as:
1,2,3,1,2,3,1,2,3,4,5,6,4,5,6,4,5,6.....k-2,k-1,k,k-2,k-1,k
i.e. repeat [1,2,3], [4,5,6].... 3 times. How to do this without a for loop?
Thank you very much.

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More Answers (1)

Sudheer Bhimireddy
Sudheer Bhimireddy on 7 Aug 2020
For OPs example, it would be:
>> A = [repmat([1,2,3],1,3) repmat([4,5,6],1,3)] %... repmat([k-2,k,k],1,3)];
>> A =
1 2 3 1 2 3 1 2 3 4 5 6 4 5 6 4 5 6

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